Re: TransWarp Upgrade

[ladyphoenixxii@my-deja.com]

In article <39FD41F9.CABE111E@swbell.net>,
  Rubywand <rubywand@swbell.net> wrote:
> ladyphoenixxii@my-deja.com writes ...
> >
> > After waiting for Herbert to reappear and conclude the group buy to upgrade
> > the Transwarp GS, I finally bit the bullet and ordered the 32k cache v1.8
> > eprom ("option D almost plug and play" not indicated on the website) and
> > cable from ///SHH Systeme.  My GS works beautifully now. No crashes at all!
> >

Thanks Jeff for the varification on WDC's catalogue number. I did look at the
FAQs but what you've quoted is still over my head.  As far as finding the
catalogue numbers for the oscillators it's not enough help.  I'm a child of
the cathode ray tube generation. If a tube in the radio burned out I could go
to the store with it and they'd match it up for me. That's the level of
information I need.

I did a search on Digikey and came up with a page plus of 40Mhz oscillators. 
Someone did send me the catalogue numbers from Digikey and we are going
together to place an order.






>      That looks like the one. (See http://www.wdesignc.com/ch816S.html .)  The
> 65C816 comes in a 40-pin DIP ("P") package and 44-pin quad (e.g. "PL")
> packages.
>
By the way does the ZIPGSX use the same chip for upgrading?

Sandy     www.gsaug.org




>      Here is a snip from the newsgroup FAQs which should help:
>
> FAQs-on-Ground ref: Csa2ACCEL.txt
> >>
>
> 015- How do I experiment with different oscillator frequencies?
>
>      Most of the following is from a piece on ZipGS upgrading by Long. It is
> also a useful guide for TWGS owners.
>
>      The ZipGS can use three types of crystal oscillators: the common 4-pin
> "full TTL" size oscillator module (about the size of a 14-pin TTL IC), a 4-pin
> "half TTL" size oscillator module (also used on TWGS), or an on-card circuit
> with a separate crystal (little 2-pin metal canister).  To be able to use a
> separate crystal, your ZipGS must have a resistor at R1 and capacitors at C13
> and C14. I've found these three parts to be missing from current Zips which use
> an oscillator module.
>
>      Experimenting with different frequencies will be easier if you install a
> 14-pin socket for the oscillator module. (If your ZipGS has eyelets for a
> 16-pin socket*, leave the top two pins open.)  It's also a good idea to secure
> the module with one of those zip tie bands.
>
>      Only 6 of the 14 pins are connected (picture A). The Ground (GND) pins 1,
> 4 and 7 are connected together. The Power pins 11 and 14 are connected
> together; and, pin 8 is the module Output. Full-size oscillator modules use
> pins 1, 7, 8 and 14 (refer to picture B).  Half-size oscillator modules use the
> bottom four pins (4, 7, 8 and 11; picture C).
>
>      Make sure the module is oriented with the marked end (usually having a dot
> and/or notch) facing upward. The lower two pins of the module should be in the
> lowest two pins of the socket.
>
>   WARNING: The oscillator may be damaged if installed incorrectly.
>
>         * x     x *                _______
>    GND  1 o     o 14  POWER     1 |o      \  14
>    NC     x     x     NC          |        |
>    NC     x     x     NC          |  FULL  |           ______
>    GND  4 o     o 11  POWER       |  TTL   |        4 |o     \  11
>    NC     x     x     NC          |        |          |  HALF |
>    NC     x     x     NC          |        |          |  TTL  |
>    GND  7 o     o  8  OUTPUT    7  \______/   8     7  \_____/   8
>
>             (A)                      (B)                 (C)
>
>    x - no connection (NC)
>
> <<
>
>      Besides Digi-Key, another place with oscillators at reasonable prices is
> Mouser ( http://www.mouser.com/ ).
>
> Rubywand
>


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